

const song = {
    state:{
        listOfSongs: [],     //当前歌曲列表
        // isPlay: false,          //是否播放中
        // url: '',                //歌曲地址
        // id: '',                  //歌曲id
        // playButtonUrl: '#icon-bofang',   //播放状态的图标
        // duration: 0,                //音乐时长
        // curTime:  0,                //当前音乐的播放位置
        // changeTime: 0,              //指定播放时刻
        // title: '',                  //歌名
        // artist: '',                 //歌手名
        // picUrl: '',                 //歌曲图片
        // autoNext: true,             //用于自动触发播放下一首
        // lyric: [],                  //未处理的歌词数据
        // tempList: {},               //单个歌单信息或歌手信息
        // listIndex: null,            //当前歌曲在歌单中的位置
        // volume: 50                  //音量
    },
    getters: {
        listOfSongs: state => {
            let listOfSongs = state.listOfSongs;
            if(!listOfSongs.length){
                listOfSongs = JSON.parse(window.sessionStorage.getItem('listOfSongs')||null); 
            }
            return listOfSongs;
        },
        // isPlay: state => {
        //     let isPlay = state.isPlay;
        //     if(!isPlay){
        //         isPlay = JSON.parse(window.sessionStorage.getItem('isPlay')||null); 
        //     }
        //     return isPlay;
        // },
        // url: state => {
        //     let url = state.url;
        //     if(!url){
        //         url = JSON.parse(window.sessionStorage.getItem('url')||null); 
        //     }
        //     return url;
        // },
        // id: state => {
        //     let id = state.id;
        //     if(!id){
        //         id = JSON.parse(window.sessionStorage.getItem('id')||null); 
        //     }
        //     return id;
        // },
        // playButtonUrl: state => {
        //     let playButtonUrl = state.playButtonUrl;
        //     if(!playButtonUrl){
        //         playButtonUrl = JSON.parse(window.sessionStorage.getItem('playButtonUrl')||null); 
        //     }
        //     return playButtonUrl;
        // },
        // duration: state => {
        //     let duration = state.duration;
        //     if(!duration){
        //         duration = JSON.parse(window.sessionStorage.getItem('duration')||null); 
        //     }
        //     return duration;
        // },
        // curTime: state => {
        //     let curTime = state.curTime;
        //     if(!curTime){
        //         curTime = JSON.parse(window.sessionStorage.getItem('curTime')||null); 
        //     }
        //     return curTime;
        // },
        // changeTime: state => {
        //     let changeTime = state.changeTime;
        //     if(!changeTime){
        //         changeTime = JSON.parse(window.sessionStorage.getItem('changeTime')||null); 
        //     }
        //     return changeTime;
        // },
        // title: state => {
        //     let title = state.title;
        //     if(!title){
        //         title = JSON.parse(window.sessionStorage.getItem('title')||null); 
        //     }
        //     return title;
        // },
        // artist: state => {
        //     let artist = state.artist;
        //     if(!artist){
        //         artist = JSON.parse(window.sessionStorage.getItem('artist')||null); 
        //     }
        //     return artist;
        // },
        // picUrl: state => {
        //     let picUrl = state.picUrl;
        //     if(!picUrl){
        //         picUrl = JSON.parse(window.sessionStorage.getItem('picUrl')||null); 
        //     }
        //     return picUrl;
        // },
        // autoNext: state => {
        //     let autoNext = state.autoNext;
        //     if(!autoNext){
        //         autoNext = JSON.parse(window.sessionStorage.getItem('autoNext')||null); 
        //     }
        //     return autoNext;
        // },
        // lyric: state => {
        //     let lyric = state.lyric;
        //     if(!lyric){
        //         lyric = JSON.parse(window.sessionStorage.getItem('lyric')||null); 
        //     }
        //     return lyric;
        // },
        // tempList: state => {
        //     let tempList = state.tempList;
        //     if(!tempList){
        //         tempList = JSON.parse(window.sessionStorage.getItem('tempList')||null); 
        //     }
        //     return tempList;
        // },
        // listIndex: state => {
        //     let listIndex = state.listIndex;
        //     if(!listIndex){
        //         listIndex = JSON.parse(window.sessionStorage.getItem('listIndex')||null); 
        //     }
        //     return listIndex;
        // },
        // volume: state => {
        //     let volume = state.volume;
        //     if(!volume){
        //         volume = JSON.parse(window.sessionStorage.getItem('volume')||null); 
        //     }
        //     return volume;
        // }
        
    },
    mutations: {
        setListOfSongs: (state,listOfSongs) => {
            state.listOfSongs = listOfSongs;
            window.sessionStorage.setItem('listOfSongs',JSON.stringify(listOfSongs));
        },
        // setIsPlay: (state,isPlay) => {
        //     state.isPlay = isPlay;
        //     window.sessionStorage.setItem('isPlay',JSON.stringify(isPlay));
        // },
        // setUrl: (state,url) => {
        //     state.url = url;
        //     window.sessionStorage.setItem('url',JSON.stringify(url));
        // },
        // setId: (state,id) => {
        //     state.id = id;
        //     window.sessionStorage.setItem('id',JSON.stringify(id));
        // },
        // setPlayButtonUrl: (state,playButtonUrl) => {
        //     state.playButtonUrl = playButtonUrl;
        //     window.sessionStorage.setItem('playButtonUrl',JSON.stringify(playButtonUrl));
        // },
        // setDuration: (state,duration) => {
        //     state.duration = duration;
        //     window.sessionStorage.setItem('duration',JSON.stringify(duration));
        // },        
        // setCurTime: (state,curTime) => {
        //     state.curTime = curTime;
        //     window.sessionStorage.setItem('curTime',JSON.stringify(curTime));
        // },
        // setChangeTime: (state,changeTime) => {
        //     state.changeTime = changeTime;
        //     window.sessionStorage.setItem('changeTime',JSON.stringify(changeTime));
        // },
        // setTitle: (state,title) => {
        //     state.title = title;
        //     window.sessionStorage.setItem('title',JSON.stringify(title));
        // },
        // setArtist: (state,artist) => {
        //     state.artist = artist;
        //     window.sessionStorage.setItem('artist',JSON.stringify(artist));
        // },
        // setPicUrl: (state,picUrl) => {
        //     state.picUrl = picUrl;
        //     window.sessionStorage.setItem('picUrl',JSON.stringify(picUrl));
        // },
        // setAutoNext: (state,autoNext) => {
        //     state.autoNext = autoNext;
        //     window.sessionStorage.setItem('autoNext',JSON.stringify(autoNext));
        // },
        // setLyric: (state,lyric) => {
        //     state.lyric = lyric;
        //     window.sessionStorage.setItem('lyric',JSON.stringify(lyric));
        // },
        // setTempList: (state,tempList) => {
        //     state.tempList = tempList;
        //     window.sessionStorage.setItem('tempList',JSON.stringify(tempList));
        // },
        // setListIndex: (state,listIndex) => {
        //     state.listIndex = listIndex;
        //     window.sessionStorage.setItem('listIndex',JSON.stringify(listIndex));
        // },
        // setVolume: (state,volume) => {
        //     state.volume = volume;
        //     window.sessionStorage.setItem('volume',JSON.stringify(volume));
        // }
    }
}

export default song